/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:35:07,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:35:07,587 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:35:07,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:35:07,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:35:07,626 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:35:07,628 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:35:07,630 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:35:07,633 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:35:07,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:35:07,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:35:07,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:35:07,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:35:07,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:35:07,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:35:07,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:35:07,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:35:07,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:35:07,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:35:07,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:35:07,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:35:07,656 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:35:07,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:35:07,659 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:35:07,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:35:07,663 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:35:07,663 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:35:07,664 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:35:07,665 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:35:07,666 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:35:07,667 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:35:07,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:35:07,669 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:35:07,670 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:35:07,672 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:35:07,672 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:35:07,673 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:35:07,674 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:35:07,674 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:35:07,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:35:07,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:35:07,678 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 13:35:07,708 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:35:07,708 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:35:07,710 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:35:07,710 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:35:07,710 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:35:07,711 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:35:07,711 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:35:07,711 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:35:07,711 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:35:07,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:35:07,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:35:07,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:35:07,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:35:07,712 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:35:07,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:35:07,713 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:35:07,713 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:35:07,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:35:07,714 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:35:07,714 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:35:07,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:35:07,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:35:07,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:35:07,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:35:07,715 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:35:07,715 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:35:07,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:35:07,715 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:35:07,716 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:35:07,716 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:35:08,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:35:08,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:35:08,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:35:08,185 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:35:08,186 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:35:08,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label21.c [2020-10-28 13:35:08,274 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac5d2d3d1/4e006feb3ccf4167be88c9503338e88c/FLAG02af65ff6 [2020-10-28 13:35:09,223 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:35:09,224 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label21.c [2020-10-28 13:35:09,265 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac5d2d3d1/4e006feb3ccf4167be88c9503338e88c/FLAG02af65ff6 [2020-10-28 13:35:09,770 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac5d2d3d1/4e006feb3ccf4167be88c9503338e88c [2020-10-28 13:35:09,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:35:09,787 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:35:09,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:35:09,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:35:09,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:35:09,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:35:09" (1/1) ... [2020-10-28 13:35:09,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33836534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:35:09, skipping insertion in model container [2020-10-28 13:35:09,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:35:09" (1/1) ... [2020-10-28 13:35:09,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:35:09,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:35:11,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:35:11,243 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:35:11,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:35:11,974 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:35:11,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:35:11 WrapperNode [2020-10-28 13:35:11,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:35:11,978 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:35:11,978 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:35:11,978 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:35:11,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:35:11" (1/1) ... [2020-10-28 13:35:11,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:35:11" (1/1) ... [2020-10-28 13:35:12,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:35:11" (1/1) ... [2020-10-28 13:35:12,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:35:11" (1/1) ... [2020-10-28 13:35:12,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:35:11" (1/1) ... [2020-10-28 13:35:12,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:35:11" (1/1) ... [2020-10-28 13:35:12,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:35:11" (1/1) ... [2020-10-28 13:35:12,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:35:12,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:35:12,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:35:12,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:35:12,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:35:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:35:12,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:35:12,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:35:12,328 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:35:12,328 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:35:12,328 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:35:12,329 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:35:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:35:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:35:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:35:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:35:12,330 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:35:12,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:35:12,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:35:12,330 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:35:12,330 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:35:12,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:35:12,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:35:12,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:35:12,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:35:12,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:35:12,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:35:23,546 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:35:23,546 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:35:23,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:35:23 BoogieIcfgContainer [2020-10-28 13:35:23,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:35:23,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:35:23,552 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:35:23,555 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:35:23,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:35:09" (1/3) ... [2020-10-28 13:35:23,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a64f6e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:35:23, skipping insertion in model container [2020-10-28 13:35:23,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:35:11" (2/3) ... [2020-10-28 13:35:23,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a64f6e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:35:23, skipping insertion in model container [2020-10-28 13:35:23,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:35:23" (3/3) ... [2020-10-28 13:35:23,560 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label21.c [2020-10-28 13:35:23,573 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:35:23,581 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:35:23,597 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:35:23,633 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:35:23,633 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:35:23,633 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:35:23,633 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:35:23,633 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:35:23,633 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:35:23,634 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:35:23,634 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:35:23,669 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-28 13:35:23,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-28 13:35:23,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:35:23,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:35:23,682 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:35:23,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:35:23,689 INFO L82 PathProgramCache]: Analyzing trace with hash 10153866, now seen corresponding path program 1 times [2020-10-28 13:35:23,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:35:23,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668890910] [2020-10-28 13:35:23,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:35:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:24,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:24,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:24,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 13:35:24,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:24,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 709 [2020-10-28 13:35:24,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:24,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:24,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:35:24,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:35:24,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-28 13:35:24,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:35:24,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:35:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:24,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:24,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:24,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:35:24,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:24,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 13:35:24,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:24,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:24,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:35:24,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:35:24,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:35:24,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:35:24,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:35:24,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668890910] [2020-10-28 13:35:24,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:35:24,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:35:24,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34312931] [2020-10-28 13:35:24,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:35:24,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:35:24,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:35:24,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:35:24,988 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-28 13:35:34,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:35:34,991 INFO L93 Difference]: Finished difference Result 1697 states and 3097 transitions. [2020-10-28 13:35:34,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:35:34,994 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-10-28 13:35:34,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:35:35,018 INFO L225 Difference]: With dead ends: 1697 [2020-10-28 13:35:35,019 INFO L226 Difference]: Without dead ends: 1013 [2020-10-28 13:35:35,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:35:35,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2020-10-28 13:35:35,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 1003. [2020-10-28 13:35:35,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-10-28 13:35:35,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1543 transitions. [2020-10-28 13:35:35,154 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1543 transitions. Word has length 66 [2020-10-28 13:35:35,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:35:35,155 INFO L481 AbstractCegarLoop]: Abstraction has 1003 states and 1543 transitions. [2020-10-28 13:35:35,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:35:35,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1543 transitions. [2020-10-28 13:35:35,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-28 13:35:35,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:35:35,167 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:35:35,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:35:35,168 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:35:35,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:35:35,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1347411382, now seen corresponding path program 1 times [2020-10-28 13:35:35,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:35:35,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398626704] [2020-10-28 13:35:35,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:35:35,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:35,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:35,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:36,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:38,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:38,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:38,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 13:35:38,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:35:38,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3228 [2020-10-28 13:35:38,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:38,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:38,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:35:38,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:35:38,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:35:38,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:35:38,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:35:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:38,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:38,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:38,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:35:38,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:38,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:35:38,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:38,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:38,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:35:38,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:35:38,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:35:38,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-28 13:35:38,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:35:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:38,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:38,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:38,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:35:38,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:38,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-28 13:35:38,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:38,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:38,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:35:38,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:35:38,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 13:35:38,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:35:38,937 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:35:38,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398626704] [2020-10-28 13:35:38,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:35:38,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:35:38,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755561378] [2020-10-28 13:35:38,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:35:38,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:35:38,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:35:38,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:35:38,942 INFO L87 Difference]: Start difference. First operand 1003 states and 1543 transitions. Second operand 7 states. [2020-10-28 13:35:55,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:35:55,498 INFO L93 Difference]: Finished difference Result 2965 states and 4574 transitions. [2020-10-28 13:35:55,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:35:55,499 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 137 [2020-10-28 13:35:55,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:35:55,513 INFO L225 Difference]: With dead ends: 2965 [2020-10-28 13:35:55,514 INFO L226 Difference]: Without dead ends: 1968 [2020-10-28 13:35:55,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:35:55,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2020-10-28 13:35:55,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 1916. [2020-10-28 13:35:55,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1916 states. [2020-10-28 13:35:55,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2484 transitions. [2020-10-28 13:35:55,627 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2484 transitions. Word has length 137 [2020-10-28 13:35:55,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:35:55,627 INFO L481 AbstractCegarLoop]: Abstraction has 1916 states and 2484 transitions. [2020-10-28 13:35:55,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:35:55,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2484 transitions. [2020-10-28 13:35:55,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-28 13:35:55,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:35:55,631 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:35:55,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:35:55,632 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:35:55,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:35:55,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1156110615, now seen corresponding path program 1 times [2020-10-28 13:35:55,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:35:55,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610650937] [2020-10-28 13:35:55,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:35:55,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:55,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:55,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:56,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:00,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:00,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-28 13:36:00,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:36:00,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 13:36:00,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:00,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:00,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:36:00,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 13:36:00,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 13:36:00,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 13:36:00,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:36:00,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:00,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:00,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:00,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:36:00,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:36:00,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 13:36:00,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:00,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:00,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:36:00,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:36:00,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:36:00,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:00,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:36:00,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:00,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:01,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:01,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:36:01,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:36:01,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-28 13:36:01,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:01,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:01,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:36:01,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:36:01,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 13:36:01,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:36:01,130 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 57 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:36:01,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610650937] [2020-10-28 13:36:01,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:36:01,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:36:01,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356379360] [2020-10-28 13:36:01,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:36:01,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:36:01,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:36:01,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:36:01,141 INFO L87 Difference]: Start difference. First operand 1916 states and 2484 transitions. Second operand 5 states. [2020-10-28 13:36:14,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:36:14,905 INFO L93 Difference]: Finished difference Result 4734 states and 6294 transitions. [2020-10-28 13:36:14,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:36:14,907 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-10-28 13:36:14,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:36:14,922 INFO L225 Difference]: With dead ends: 4734 [2020-10-28 13:36:14,922 INFO L226 Difference]: Without dead ends: 2378 [2020-10-28 13:36:14,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:36:14,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2378 states. [2020-10-28 13:36:15,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2378 to 2359. [2020-10-28 13:36:15,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2359 states. [2020-10-28 13:36:15,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2359 states to 2359 states and 2902 transitions. [2020-10-28 13:36:15,030 INFO L78 Accepts]: Start accepts. Automaton has 2359 states and 2902 transitions. Word has length 140 [2020-10-28 13:36:15,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:36:15,032 INFO L481 AbstractCegarLoop]: Abstraction has 2359 states and 2902 transitions. [2020-10-28 13:36:15,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:36:15,032 INFO L276 IsEmpty]: Start isEmpty. Operand 2359 states and 2902 transitions. [2020-10-28 13:36:15,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-28 13:36:15,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:36:15,044 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:36:15,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:36:15,045 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:36:15,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:36:15,045 INFO L82 PathProgramCache]: Analyzing trace with hash -49530938, now seen corresponding path program 1 times [2020-10-28 13:36:15,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:36:15,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672673228] [2020-10-28 13:36:15,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:36:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:15,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:15,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:16,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:16,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:36:16,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:36:16,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1109 [2020-10-28 13:36:16,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:16,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:16,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:36:16,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:36:16,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:36:16,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:16,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:36:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:16,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:16,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:16,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:36:16,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:36:16,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:36:16,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:16,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:16,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:36:16,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:36:16,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:36:16,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:16,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:36:16,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:16,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:16,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:16,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:36:16,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:36:16,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-28 13:36:16,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:16,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:16,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:36:16,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:36:16,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:36:16,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:36:16,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:36:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:16,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:16,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:16,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 13:36:16,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:36:16,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-28 13:36:16,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:16,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:16,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:36:16,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:36:16,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 13:36:16,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:36:16,874 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 186 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:36:16,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672673228] [2020-10-28 13:36:16,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:36:16,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:36:16,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082384589] [2020-10-28 13:36:16,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:36:16,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:36:16,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:36:16,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:36:16,878 INFO L87 Difference]: Start difference. First operand 2359 states and 2902 transitions. Second operand 7 states. [2020-10-28 13:36:29,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:36:29,364 INFO L93 Difference]: Finished difference Result 6082 states and 7758 transitions. [2020-10-28 13:36:29,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:36:29,365 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 226 [2020-10-28 13:36:29,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:36:29,386 INFO L225 Difference]: With dead ends: 6082 [2020-10-28 13:36:29,387 INFO L226 Difference]: Without dead ends: 3729 [2020-10-28 13:36:29,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:36:29,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3729 states. [2020-10-28 13:36:29,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3729 to 3721. [2020-10-28 13:36:29,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3721 states. [2020-10-28 13:36:29,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3721 states to 3721 states and 4572 transitions. [2020-10-28 13:36:29,504 INFO L78 Accepts]: Start accepts. Automaton has 3721 states and 4572 transitions. Word has length 226 [2020-10-28 13:36:29,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:36:29,505 INFO L481 AbstractCegarLoop]: Abstraction has 3721 states and 4572 transitions. [2020-10-28 13:36:29,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:36:29,505 INFO L276 IsEmpty]: Start isEmpty. Operand 3721 states and 4572 transitions. [2020-10-28 13:36:29,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-28 13:36:29,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:36:29,509 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:36:29,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:36:29,510 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:36:29,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:36:29,510 INFO L82 PathProgramCache]: Analyzing trace with hash -2096433822, now seen corresponding path program 1 times [2020-10-28 13:36:29,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:36:29,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084182113] [2020-10-28 13:36:29,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:36:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:29,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:29,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:31,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:32,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:34,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:34,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-28 13:36:34,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:36:34,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-28 13:36:34,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:34,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:34,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:36:34,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-28 13:36:34,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 13:36:34,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:36:34,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:36:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:34,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:34,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:34,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:36:34,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:36:34,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:36:34,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:34,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:34,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:36:34,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:36:34,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:36:34,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:36:34,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:36:34,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:34,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:34,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:34,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:36:34,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:36:34,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 13:36:34,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:34,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:34,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:36:34,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:36:34,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:36:34,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:34,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:36:34,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:34,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:35,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:35,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 13:36:35,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:36:35,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-28 13:36:35,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:35,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:35,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:36:35,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:36:35,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:36:35,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:35,094 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 117 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-28 13:36:35,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084182113] [2020-10-28 13:36:35,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:36:35,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:36:35,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423320744] [2020-10-28 13:36:35,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:36:35,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:36:35,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:36:35,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:36:35,098 INFO L87 Difference]: Start difference. First operand 3721 states and 4572 transitions. Second operand 5 states. [2020-10-28 13:36:51,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:36:51,519 INFO L93 Difference]: Finished difference Result 10515 states and 13103 transitions. [2020-10-28 13:36:51,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:36:51,526 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 228 [2020-10-28 13:36:51,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:36:51,563 INFO L225 Difference]: With dead ends: 10515 [2020-10-28 13:36:51,564 INFO L226 Difference]: Without dead ends: 6799 [2020-10-28 13:36:51,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:36:51,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6799 states. [2020-10-28 13:36:51,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6799 to 5929. [2020-10-28 13:36:51,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5929 states. [2020-10-28 13:36:51,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5929 states to 5929 states and 7139 transitions. [2020-10-28 13:36:51,814 INFO L78 Accepts]: Start accepts. Automaton has 5929 states and 7139 transitions. Word has length 228 [2020-10-28 13:36:51,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:36:51,815 INFO L481 AbstractCegarLoop]: Abstraction has 5929 states and 7139 transitions. [2020-10-28 13:36:51,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:36:51,815 INFO L276 IsEmpty]: Start isEmpty. Operand 5929 states and 7139 transitions. [2020-10-28 13:36:51,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-28 13:36:51,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:36:51,821 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:36:51,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:36:51,821 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:36:51,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:36:51,822 INFO L82 PathProgramCache]: Analyzing trace with hash 187164696, now seen corresponding path program 1 times [2020-10-28 13:36:51,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:36:51,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406077948] [2020-10-28 13:36:51,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:36:51,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:51,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:52,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:52,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:56,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:56,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-28 13:36:56,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:36:56,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-28 13:36:56,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:56,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:56,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:36:56,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:36:56,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-28 13:36:56,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:57,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:36:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:57,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:57,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:57,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:36:57,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:36:57,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:36:57,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:57,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:57,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:36:57,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:36:57,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:36:57,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:57,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:36:57,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:57,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:57,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:57,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:36:57,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:36:57,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-28 13:36:57,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:57,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:57,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:36:57,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:36:57,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:36:57,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:57,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:36:57,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:57,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:57,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:57,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:57,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:36:57,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:36:57,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-28 13:36:57,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:57,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:57,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:36:57,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:36:57,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:36:57,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:57,737 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-28 13:36:57,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406077948] [2020-10-28 13:36:57,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:36:57,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:36:57,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816349939] [2020-10-28 13:36:57,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:36:57,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:36:57,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:36:57,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:36:57,741 INFO L87 Difference]: Start difference. First operand 5929 states and 7139 transitions. Second operand 6 states. [2020-10-28 13:37:12,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:37:12,302 INFO L93 Difference]: Finished difference Result 12732 states and 15399 transitions. [2020-10-28 13:37:12,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:37:12,305 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 239 [2020-10-28 13:37:12,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:37:12,340 INFO L225 Difference]: With dead ends: 12732 [2020-10-28 13:37:12,340 INFO L226 Difference]: Without dead ends: 6809 [2020-10-28 13:37:12,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:37:12,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6809 states. [2020-10-28 13:37:12,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6809 to 6805. [2020-10-28 13:37:12,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6805 states. [2020-10-28 13:37:12,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6805 states to 6805 states and 8201 transitions. [2020-10-28 13:37:12,586 INFO L78 Accepts]: Start accepts. Automaton has 6805 states and 8201 transitions. Word has length 239 [2020-10-28 13:37:12,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:37:12,587 INFO L481 AbstractCegarLoop]: Abstraction has 6805 states and 8201 transitions. [2020-10-28 13:37:12,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:37:12,587 INFO L276 IsEmpty]: Start isEmpty. Operand 6805 states and 8201 transitions. [2020-10-28 13:37:12,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-28 13:37:12,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:37:12,595 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:37:12,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:37:12,596 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:37:12,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:37:12,596 INFO L82 PathProgramCache]: Analyzing trace with hash -196313604, now seen corresponding path program 1 times [2020-10-28 13:37:12,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:37:12,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541972675] [2020-10-28 13:37:12,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:37:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:12,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:12,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:13,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:14,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:16,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:17,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:17,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-28 13:37:17,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:37:17,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-28 13:37:17,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:17,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:17,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:37:17,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-28 13:37:17,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-28 13:37:17,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:37:17,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:37:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:17,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:17,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:17,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:37:17,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:37:17,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:37:17,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:17,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:17,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:37:17,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:37:17,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:37:17,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:37:18,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:37:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:18,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:18,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:18,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:37:18,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:37:18,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 13:37:18,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:18,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:18,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:37:18,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:37:18,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:37:18,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:37:18,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:37:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:18,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:18,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:18,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:37:18,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:37:18,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 13:37:18,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:18,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:18,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:37:18,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:37:18,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:37:18,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:37:18,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-28 13:37:18,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:18,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:18,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:18,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:18,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:37:18,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:37:18,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-28 13:37:18,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:18,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:18,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:37:18,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:37:18,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 13:37:18,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:37:18,645 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 180 proven. 3 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2020-10-28 13:37:18,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541972675] [2020-10-28 13:37:18,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:37:18,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:37:18,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249262892] [2020-10-28 13:37:18,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:37:18,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:37:18,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:37:18,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:37:18,648 INFO L87 Difference]: Start difference. First operand 6805 states and 8201 transitions. Second operand 5 states. [2020-10-28 13:37:34,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:37:34,397 INFO L93 Difference]: Finished difference Result 16248 states and 19879 transitions. [2020-10-28 13:37:34,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:37:34,398 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 310 [2020-10-28 13:37:34,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:37:34,437 INFO L225 Difference]: With dead ends: 16248 [2020-10-28 13:37:34,438 INFO L226 Difference]: Without dead ends: 8564 [2020-10-28 13:37:34,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:37:34,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8564 states. [2020-10-28 13:37:34,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8564 to 8557. [2020-10-28 13:37:34,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8557 states. [2020-10-28 13:37:34,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8557 states to 8557 states and 10019 transitions. [2020-10-28 13:37:34,670 INFO L78 Accepts]: Start accepts. Automaton has 8557 states and 10019 transitions. Word has length 310 [2020-10-28 13:37:34,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:37:34,671 INFO L481 AbstractCegarLoop]: Abstraction has 8557 states and 10019 transitions. [2020-10-28 13:37:34,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:37:34,671 INFO L276 IsEmpty]: Start isEmpty. Operand 8557 states and 10019 transitions. [2020-10-28 13:37:34,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-28 13:37:34,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:37:34,679 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:37:34,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:37:34,680 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:37:34,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:37:34,680 INFO L82 PathProgramCache]: Analyzing trace with hash -498396848, now seen corresponding path program 1 times [2020-10-28 13:37:34,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:37:34,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424420968] [2020-10-28 13:37:34,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:37:34,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:34,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:34,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:35,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:37,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:39,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:39,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-28 13:37:39,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:37:39,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 13:37:39,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:39,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:39,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:37:39,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:37:39,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-28 13:37:39,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:37:39,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:37:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:39,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:39,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:39,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:37:39,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:37:39,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:37:39,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:39,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:39,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:37:39,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:37:39,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:37:39,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:37:39,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:37:39,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:40,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:40,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:40,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:37:40,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:37:40,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 13:37:40,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:40,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:40,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:37:40,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:37:40,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:37:40,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:37:40,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:37:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:40,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:40,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:40,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:40,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:37:40,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:37:40,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-28 13:37:40,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:40,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:40,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:37:40,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:37:40,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:37:40,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:37:40,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-28 13:37:40,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:40,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:40,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:40,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 13:37:40,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:37:40,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 13:37:40,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:40,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:40,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:37:40,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:37:40,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 13:37:40,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:37:40,551 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 322 proven. 4 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-28 13:37:40,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424420968] [2020-10-28 13:37:40,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:37:40,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:37:40,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606745575] [2020-10-28 13:37:40,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:37:40,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:37:40,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:37:40,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:37:40,554 INFO L87 Difference]: Start difference. First operand 8557 states and 10019 transitions. Second operand 8 states. [2020-10-28 13:37:56,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:37:56,277 INFO L93 Difference]: Finished difference Result 17996 states and 21045 transitions. [2020-10-28 13:37:56,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:37:56,279 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 316 [2020-10-28 13:37:56,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:37:56,319 INFO L225 Difference]: With dead ends: 17996 [2020-10-28 13:37:56,319 INFO L226 Difference]: Without dead ends: 9445 [2020-10-28 13:37:56,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:37:56,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9445 states. [2020-10-28 13:37:56,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9445 to 9004. [2020-10-28 13:37:56,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9004 states. [2020-10-28 13:37:56,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9004 states to 9004 states and 10527 transitions. [2020-10-28 13:37:56,568 INFO L78 Accepts]: Start accepts. Automaton has 9004 states and 10527 transitions. Word has length 316 [2020-10-28 13:37:56,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:37:56,569 INFO L481 AbstractCegarLoop]: Abstraction has 9004 states and 10527 transitions. [2020-10-28 13:37:56,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:37:56,569 INFO L276 IsEmpty]: Start isEmpty. Operand 9004 states and 10527 transitions. [2020-10-28 13:37:56,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-10-28 13:37:56,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:37:56,591 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:37:56,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:37:56,591 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:37:56,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:37:56,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1525342399, now seen corresponding path program 1 times [2020-10-28 13:37:56,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:37:56,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687778110] [2020-10-28 13:37:56,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:37:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:56,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:56,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:57,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:58,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:01,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:01,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 366 [2020-10-28 13:38:01,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:38:01,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4939 [2020-10-28 13:38:01,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:01,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:01,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:38:01,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 208 [2020-10-28 13:38:01,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 13:38:01,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:01,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:38:01,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:01,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:01,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:01,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:38:01,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:38:01,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:38:01,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:01,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:01,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:38:01,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:38:01,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:38:01,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:01,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:38:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:01,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:01,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:01,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:38:01,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:38:01,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 13:38:01,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:01,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:01,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:38:01,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:38:01,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:38:01,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:01,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:38:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:01,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:02,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:02,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 13:38:02,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:38:02,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-28 13:38:02,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:02,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:02,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:38:02,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:38:02,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 13:38:02,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:02,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-28 13:38:02,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:02,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:02,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:02,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:02,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 13:38:02,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:38:02,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-28 13:38:02,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:02,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:02,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:38:02,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:38:02,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 13:38:02,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:38:02,516 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 180 proven. 3 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-10-28 13:38:02,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [687778110] [2020-10-28 13:38:02,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:38:02,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:38:02,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597395055] [2020-10-28 13:38:02,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:38:02,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:38:02,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:38:02,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:38:02,526 INFO L87 Difference]: Start difference. First operand 9004 states and 10527 transitions. Second operand 5 states. [2020-10-28 13:38:18,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:38:18,949 INFO L93 Difference]: Finished difference Result 21084 states and 25096 transitions. [2020-10-28 13:38:18,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:38:18,952 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 350 [2020-10-28 13:38:18,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:38:19,001 INFO L225 Difference]: With dead ends: 21084 [2020-10-28 13:38:19,002 INFO L226 Difference]: Without dead ends: 12086 [2020-10-28 13:38:19,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:38:19,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12086 states. [2020-10-28 13:38:19,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12086 to 11209. [2020-10-28 13:38:19,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11209 states. [2020-10-28 13:38:19,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11209 states to 11209 states and 13228 transitions. [2020-10-28 13:38:19,338 INFO L78 Accepts]: Start accepts. Automaton has 11209 states and 13228 transitions. Word has length 350 [2020-10-28 13:38:19,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:38:19,339 INFO L481 AbstractCegarLoop]: Abstraction has 11209 states and 13228 transitions. [2020-10-28 13:38:19,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:38:19,340 INFO L276 IsEmpty]: Start isEmpty. Operand 11209 states and 13228 transitions. [2020-10-28 13:38:19,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-10-28 13:38:19,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:38:19,356 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:38:19,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:38:19,357 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:38:19,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:38:19,358 INFO L82 PathProgramCache]: Analyzing trace with hash -814233880, now seen corresponding path program 1 times [2020-10-28 13:38:19,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:38:19,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802014538] [2020-10-28 13:38:19,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:38:19,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:19,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:19,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:23,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:24,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:24,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 377 [2020-10-28 13:38:24,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:38:24,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 13:38:24,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:24,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:24,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:38:24,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 309 [2020-10-28 13:38:24,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 13:38:24,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:24,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:38:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:24,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:24,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:24,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:38:24,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:38:24,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:38:24,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:24,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:24,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:38:24,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:38:24,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:38:24,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:24,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:38:24,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:24,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:24,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:24,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:38:24,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:38:24,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 13:38:24,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:24,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:24,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:38:24,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:38:24,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:38:24,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:24,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:38:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:24,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:24,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:24,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-28 13:38:24,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:38:24,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-28 13:38:24,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:24,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:24,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:38:24,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:38:24,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-28 13:38:24,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:25,185 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 117 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-28 13:38:25,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802014538] [2020-10-28 13:38:25,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:38:25,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:38:25,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493031594] [2020-10-28 13:38:25,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:38:25,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:38:25,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:38:25,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:38:25,188 INFO L87 Difference]: Start difference. First operand 11209 states and 13228 transitions. Second operand 5 states. [2020-10-28 13:38:44,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:38:44,137 INFO L93 Difference]: Finished difference Result 26854 states and 32427 transitions. [2020-10-28 13:38:44,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:38:44,144 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 363 [2020-10-28 13:38:44,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:38:44,200 INFO L225 Difference]: With dead ends: 26854 [2020-10-28 13:38:44,200 INFO L226 Difference]: Without dead ends: 15651 [2020-10-28 13:38:44,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:38:44,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15651 states. [2020-10-28 13:38:44,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15651 to 14766. [2020-10-28 13:38:44,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14766 states. [2020-10-28 13:38:44,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14766 states to 14766 states and 17650 transitions. [2020-10-28 13:38:44,552 INFO L78 Accepts]: Start accepts. Automaton has 14766 states and 17650 transitions. Word has length 363 [2020-10-28 13:38:44,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:38:44,553 INFO L481 AbstractCegarLoop]: Abstraction has 14766 states and 17650 transitions. [2020-10-28 13:38:44,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:38:44,553 INFO L276 IsEmpty]: Start isEmpty. Operand 14766 states and 17650 transitions. [2020-10-28 13:38:44,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2020-10-28 13:38:44,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:38:44,573 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:38:44,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:38:44,573 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:38:44,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:38:44,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1469369529, now seen corresponding path program 1 times [2020-10-28 13:38:44,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:38:44,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563138712] [2020-10-28 13:38:44,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:38:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:44,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:45,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:47,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:47,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 427 [2020-10-28 13:38:47,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:38:47,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2805 [2020-10-28 13:38:47,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:47,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:47,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 13:38:47,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:38:47,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 418 [2020-10-28 13:38:47,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:47,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:38:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:47,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:47,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:47,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:38:47,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:38:47,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:38:47,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:47,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:47,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:38:47,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:38:47,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:38:47,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:47,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:38:47,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:47,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:48,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:48,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-10-28 13:38:48,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:38:48,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 668 [2020-10-28 13:38:48,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:48,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:48,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 13:38:48,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:38:48,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 350 [2020-10-28 13:38:48,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0